MC cable ampacity and temp column

[blueheels2]

Hey so looking around I have seen a couple of posts claiming that MC cable is listed for use at 90 degrees. Most terminations are only good for the 75 degree column so in most cases ampacity would be limited to the 75 degree column. The question is where do I find that MC cable is good for 90 degrees. In the 2017 I see where AC cable and NM-B have their ampacities limited in 320.80(A) and 334.80. 330.80 refers me to 310.15 or 310.60 but I don't see it spelled out there. Can someone fill me in on what I'm missing.

 

[infinity]

The conductors within the cable are good for 90°C but you're still limited to the 75 ° C ampacity because of the terminals.